FREDERICK, Colo.—(BUSINESS WIRE)—April 4, 2008—
UQM TECHNOLOGIES, INC. (AMEX:
UQM), a developer of alternative
energy technologies, announced today that a UQM(R) electric propulsion
system was turning the propeller when Boeing (NYSE:BA), for the first
time in aviation history, flew a manned airplane powered by hydrogen
fuel cells.

The recent milestone is the work of an engineering team at Boeing
Research & Technology Europe (BR&TE) in Madrid, with assistance from
industry partners in Austria, France, Germany, Spain, the United
Kingdom and the United States, including UQM Technologies, Inc., which
is the only U.S.-based partner.

A two-seat Dimona motor-glider with a 16.3-meter (53.5-foot)
wingspan was used as the airframe. Built by Diamond Aircraft
Industries of Austria, it was modified by BR&TE to include a Proton
Exchange Membrane (PEM) fuel cell/lithium-ion battery hybrid system to
power a UQM(R) electric motor coupled to a conventional propeller.

Three test flights took place in February and March at the
airfield in Ocana, south of Madrid, operated by the Spanish company
SENASA. During the flights, the pilot of the experimental airplane
climbed to an altitude of 1,000 meters (3,300 feet) above sea level
using a combination of battery power and power generated by hydrogen
fuel cells. Then, after reaching the cruise altitude and disconnecting
the batteries, the pilot flew straight and level at a cruising speed
of 100 kilometers per hour (62 miles per hour) for approximately 20
minutes on power solely generated by the fuel cells.

"Boeing is actively working to develop new technologies for
environmentally progressive aerospace products. Technology from
partners like UQM Technologies' are an important part of this aviation
first, and the small, lightweight and efficient UQM(R) electric motor
and controller performed flawlessly during the manned flight test,"
said Francisco Escarti, BR&TE's managing director. "We are proud of
our pioneering work during the past five years on the Fuel Cell
Demonstrator Airplane project. It is a tangible example of how we are
exploring future leaps in environmental performance, as well as a
credit to the talents and innovative spirit of our team."

"We are extremely pleased that our electric motor and motor
controller were chosen by Boeing to perform the critical function of
turning the propeller on this historic aviation first," said William
G. Rankin, UQM Technologies, Inc.'s President and Chief Executive
Officer. "Our systems deliver the torque, power and energy efficiency
that advanced applications such as this require, in a lightweight and
compact package."

A fuel cell is an electrochemical device that converts hydrogen
directly into electricity and heat with none of the products of
combustion such as carbon dioxide. Other than heat, water is its only
exhaust.

According to Boeing researchers, PEM fuel cell technology
potentially could power small manned and unmanned air vehicles. Over
the longer term, solid oxide fuel cells could be applied to secondary
power-generating systems, such as auxiliary power units for large
commercial airplanes. Boeing does not envision that fuel cells will
ever provide primary power for large passenger airplanes, but the
company will continue to investigate their potential, as well as other
sustainable alternative fuel and energy sources that improve
environmental performance.

BR&TE, part of the Boeing Phantom Works advanced R&D unit, has
worked closely with Boeing Commercial Airplanes and a network of
partners since 2003 to design, assemble and fly the experimental
craft.

UQM Technologies, Inc. is a developer and manufacturer of power
dense, high efficiency electric motors, generators and power
electronic controllers for the automotive, aerospace, medical,
military and industrial markets. A major emphasis of the Company is
developing products for the alternative energy technologies sector
including propulsion systems for electric, hybrid electric, plug-in
hybrid electric and fuel cell electric vehicles, under-the-hood power
accessories and other vehicle auxiliaries and distributed power
generation applications. The Company's headquarters, engineering and
product development center, and motor manufacturing operation are
located in Frederick, Colorado. For more information on the Company,
please visit its worldwide website at www.uqm.com.

This Release contains statements that constitute "forward-looking
statements" within the meaning of Section 27A of the Securities Act
and Section 21E of the Securities Exchange Act. These statements
appear in a number of places in this Release and include statements
regarding our plans, beliefs or current expectations, including those
plans, beliefs and expectations of our officers and directors with
respect to, among other things the development of markets for our
products and the adequacy of our cash balances and liquidity to meet
future operating needs. Important Risk Factors that could cause actual
results to differ from those contained in the forward-looking
statements are contained in our Form 10-Q filed January 30, 2008,
which is available through our website at www.uqm.com or at
www.sec.gov.
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